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Commit 6f82b83b authored by Dan Williams's avatar Dan Williams
Browse files

ioat2,3: disable asynchronous error notifications 



Error interrupts and error completions may cause channel hangs, so
poll the channel status register after a timeout.

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 228c4f5c

drivers/dma/ioat/registers.h

+1 −3
Original line number Diff line number Diff line
@@ -92,9 +92,7 @@ 
#define IOAT_CHANCTRL_ERR_COMPLETION_EN		0x0004

#define IOAT_CHANCTRL_INT_REARM			0x0001

#define IOAT_CHANCTRL_RUN			(IOAT_CHANCTRL_INT_REARM |\

						 IOAT_CHANCTRL_ERR_COMPLETION_EN |\

						 IOAT_CHANCTRL_ANY_ERR_ABORT_EN |\

						 IOAT_CHANCTRL_ERR_INT_EN)

						 IOAT_CHANCTRL_ANY_ERR_ABORT_EN)



#define IOAT_DMA_COMP_OFFSET			0x02	/* 16-bit DMA channel compatibility */

#define IOAT_DMA_COMP_V1			0x0001	/* Compatibility with DMA version 1 */